Outboard bearing for metal rolling apparatus



y 1, 1953 J. H. FRIEDMAN 2,645,955

OUTBOARD BEARING FOR METAL ROLLING APPARATUS Filed Feb. 13, 1951 3 Sheets-Sheet 1 lab 1 N V EN TOR.

JGWN H. FRIEDMAN .1. BY- j A TTOfNEY-S' July 21, 1953 J. H. FRIEDMAN OUTBOARD BEARING FOR METAL ROLLING APPARATUS Filed Feb. 13, 1951 s Sheets-Sheet 2 full '1",

' INVENTOR. JOHN H. FRIEDMAN BY @304 2 4d ATTOENKYJ July 21, 1953 J. H. FRIEDMAN OUTBOARD BEARING FOR METAL ROLLING APPARATUS Filed Feb. 15, 1951 3 Sheets-Sheet 3 IN VEN TOR. vOHN H. F Elf DMAN ATTORNEYS Patented July 21, 1953 ou'rnoAan-nnanmcron METALROLLING. APPARATUS; John-n. Friedman-Turin, Ohio; assignor to The National Machinery (lompany .1. mg o ti pf'ohio This invention relates to rolling mills and more" the type above referred to and alongfwith the demand for close dimensional tolerances in, roll-Y ing, there has developed-the 'needfor apparatus to insure against roll shaft deflection. among the objects of the present invention to provide means for preventing roll shaft deflection and at the sametime retain the advantages resulting from the mounting of the rolls. atthe exterior of the mill frame- Itis a further object of my invention to provide-a mill according to the preceding objects that will insure against roll deflection and at the same time accommodate the spacing. adjustment-pf one rolLwith respect to the other. It is a further object of my invention to provide a mill according to the preceding objects wherein the roll shaft deflection is prevented, by apparatus which does not adversely affect the roll mounting from the standpoint of accessibility for roll change and service. Further advantages relating to efficiency in operation and economy of manufacture will appear from the following description and the appended drawings wherein:

Fig. 1 is an elevation with parts in section of a roll shaft bearing structure made according to the present invention.

Fig. 2 is an elevation of the bearing structure looking towards the ends of the roll shafts.

Fig. 3 is a sectional view taken on the plane indicated at 3--3 of Fig.2

Fig. 4 is a composite perspective view showing the roll shaft and the bearin elements mounted thereon.

Referring to the drawings, the frame of the rolling mill is indicated at 5 in Fig. 1 and the roll shafts 6 and 1 project therefrom. The roll shafts are geared to each other and are arranged to be rotated in a cyclic fashion one revolution and then brought to a stop as disclosed in detail in my said copending application. Gap rolls 8 and 9 are arranged adjacent the frame 5 on the shafts 6 and 1 respectively. Thrustwashers as at H! and H are disposed between the frame and the rolls.

The portions of the roll shafts which project beyond the frame have a greater axial extent than the axial extent of the rolls6 and I and the shaft portions beyond the rolls are secured to each other to prevent shaft deflection. The end face of each roll shaft is provided with a It is transverse away I z "to receivef'af-key" l3 Adriv roll shaft rotation to the sleeve 14. "The end of the sleeve 14 remote from slots" I la isprg avided- 4 other.

with axially extending lugs [4b which fit, corn-' plementary recesses" 8a in the end 'fa'ce'of the roll. I The lugend of the sleeve is provided with a'shoulder orcollar I40 bearing "again'st"the end faceof the roll." An internal shoulder don the sleeve bears against the end-faceiof*the7r0llshaft (see Fig. 3)'. Toflholdf the sleeve in driving position with respect to the roll, theslee've is" bored axially to receive the through'bolts'l4 To hold the'key l3. in driving positio drilled asat lea 'to:rece'ivejbo lts' 13b t e ed; into the roll shaft. ""Acover plate l'5 is d spo d; over the key l3 and is proportioned to overhang the internal shoulder Hld of the sleeve M. The bolts |3b pass through the cover plate [5 and thence through the key l3 to hold said parts assembled on the roll shaft. A bushing l6 of bronze or other suitable bearing material is fitted on the exterior of the sleeve I 4 and the bushing [6 is in turn surrounded by a bearing block H. A thrust washer Ila is disposed between the bearingblock I! and the shoulder [40 of the sleeve 14. A similar thrust washer N11 is disposed between the bearing block I! and a clamping ring I8. The ring I8 is split as at 3a and is internally threaded so as to be turned onto the outer end of the sleeve I4 which is also threaded. Openings Iflb are provided in the ring l8 to receive a spanner wrench for tightening the ring IS in place. After the ring I8 is turned down by the spanner wrench, a gap bolt I is tightened to securely clamp the ring [8 in place.

Deflection of roll shaft 6 with respect to shaft 1 while rolling a blank is prevented by securing the upper and lower bearing blocks [1 to each Tie bolts Nb and He are threaded into the bearing blocks IT. The mid portion of the tie bolts I11) and He is provided with a polygonal cross section so that the tie bolts may be turned to move the bearing blocks I1 toward or away from each other in the fashion of a turnbuckle. Lock nuts Hf lock the tie bolts in their adjusted positions. The adjustability of the tie bolts l'lb thus accommodates the adjustment of the roll shafts 6 and 1 with, respect to each other. With the construction of the instant invention the two bearing blocks l1 and the sleeves l4 may be quickly removed and the rolls changed without disturbing the mounting of the roll shafts in the made within the scope of the following claims.

I claim:

1. A mill comprising a frame, "a pairidf'roll shafts projecting from the frame, a sleeve fixed on each roll shaft at the outer end thereof, a bearing surrounding each of said sleeves, means to connect said hearings to each other, a roll on each shaft intermediate the frame and sleeve and axially extending interlocking portions 0n 4. A mill comprising a frame, a pair of cooperating roll shafts projecting from the frame, a sleeve keyed on each roll shaft at the outer end thereof, a bearing surrounding each of said sleeves, means to connect said bearings to each other, a roll on each shaft intermediate the frame and sleeve, spaced recesses in the end face of each roll, and axially extending lugs on Sa d sleeves fitting said recesses to fix the roll in driving relation with respect to the shaft.

j 5. A mill comprising a frame, a pair of parallel roll shafts with the end portions thereof Drojecting from the frame, a transverse keyway at the end of each projecting shaft, a member havsaid sleeve and roll to fix the roll with respect to the shaft.

2. A mill comprising a frame, a pair of parallel roll shafts projecting from the frame, a transverse keyway at the end of each shaft, a member having key slots complementary to said keyway at the end of each shaft, a key in said keyway having the ends thereof extending into said slots, a bearing surrounding each of said embers, adjustable means connecting said bearings to each other, a roll on each shaft between the bearing and frame and axially extending means on the member and roll to fix the roll to the member in driving relation.

3. A mill having a frame and a pair of roll shafts projecting therefrom, a sleeve keyed t0 the outer end of each of said projecting shafts, a bearing surrounding each of said sleeves, tie rods connecting said bearings to each other and a roll on each shaft keyed to the sleeve carried thereby.

ing key slots in alignment with said keyway at the end of each shaft, a key in said keyway proportioned to extend into said slots, a bearing block surrounding each of said members, adjustable means connecting said bearing blocks, a roll on each shaft between the bearing block and frame, axially extending means on the member and roll to fix the roll to the member in driving relation.

6. A mill having a frame and a pair of roll shafts projecting therefrom, a sleeve surrounding the outer end of each of said P ject n shafts, a bearing block surrounding each of said sleeves, adjustable tie rods connecting said bearings to each other and a roll on each shaft fixed to the sleeve carried thereby.

JOHN H. FRIEDMAN.

References Cited in the file of this patent UNITED STATES PATENTS Number Name Date 355,390 Daniels Jan. 4, 1887 632,115 Hicks Aug. 29, 1899 

